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KNOW ALL MEN BY THESE PRESENTS:

That I, AUBIN WOOD, of the city and county of Worcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Lathes for Turning Shafting; and I do hereby declare that the following is a full, clear, and exact description'of the same, reference being had to the accompanying drawings, forming a part of this specification, and in which- Figure 1 represents 'a side 'view of my improved lathe for turning shafting, and

Figure 2 represents a section on line AV B, iig. 1.

To enable those skilled in the art to which my invention belongs to make and use the same, I will proceed to describe it more in detail.

In the drawings, the part marked A is the bed of the lathe, which is made in this instance in the form of a lbox lupon the inside, havinga tight bottom, sides, and ends, but open on top. Tcle slide B is fastened a stand, a, to which is hingeda pump-cylinder', b; the piston c of the pump being attached to a friction-wheel, d, which i turns upon a journal projecting from the upper end of the stand a. A pipe, tube, or flexible hose, e, runs from the pump-cylinder to the cup C onV top ofthe shaft-guiding stand D, which rcsts'upon and moves with the slide B. E represents the shaft to be turned, F the journal, upon which the driving-pulleys areA placed, and Gr the tail-piece. The cutters for turning the shaft, both roughing and finishing, and the mechanism for, moving the slide B, tool-rests, and shaft-guiding piece D, attached to the slide B, may be the same as in common use, `and therefore require no further description. I

The operation is as follows: The reservoir or receptacle H is filled with soda-water, into which the end of the pump, orga pipe or hose connected thereto, enters, so that when motion is imparted to the shaft E to be turned, itwill give motion to wheel d, und the water is pumped up and forced through pipe or tube e into the i cup C, from which it freely runs through holes in the bottom of the, cnp upon all that part of theshaft being turned, and thusv keeps the points of the turning-tools from heating,and'in proper condition for turning the shaft in an accurate manner. The water, after cooling and lubricating the tools and turning-mechanism, falls Y into the receptacle or reservoir H to be pumped up again. Y

The friction-wheel d may be covered with some elastic substance, such as rubber, and the wrist-pin, to which the pump-piston it attached, may be fitted in a slot in the wheel d, so that the throw ofthe piston can be adjusted to pump more or less water, `as may be desired, and, inst-end of operating the pump bythe friction-wheel d bearing'against the shaft 1E,V it may-be driven by'separate and independent mechanism, arranged in any convenient manner, and the pump may be attached and supported upon the outside of slide B, if preferred.

It is very important that shafting should be of a-uniform size'throughout, and therefore every improvement which tends to preserve the cutting-points of the turning-tools is really of great4 practical importance, since every time a tool is changed there is a liability of varying the size of the shaft.

Having described my improved lathe'for turning shafting, what I claim therein as new, and of my invention,

and desire to secure by Letters Patent, is i 1. The combination, with the bed of the lathe, provided with a reservoir or receptacle, as described, of the sliding tool-carriage and the pump, attached to and moving with said carriage, substantially as and for the purposes shown and set forth.

2. The combination, with the sliding tool-carriage and pump, mounted upon said carriage, of the cup C, and tube connecting said cup with the pump, substantially in the manner andrfor the purposes herein shown and described.

3. The method of operating the pump, by connecting the-pistonrod ofthe same with a friction-wheel, actuated by the rotation ofthe shaftwhich is being turned in the machine, in the manner herein shown and speciiied.

AUBIN woon.

Witnesses:

THos. H. Doven, D. L. MILLER. 

